package com.cskaoyan.order.biz.handler;

import com.cskaoyan.mall.commons.exception.BizException;
import com.cskaoyan.mall.commons.util.NumberUtils;
import com.cskaoyan.order.biz.callback.SendEmailCallback;
import com.cskaoyan.order.biz.callback.TransCallback;
import com.cskaoyan.order.biz.context.CreateOrderContext;
import com.cskaoyan.order.biz.context.TransHandlerContext;
import com.cskaoyan.order.constant.OrderConstants;
import com.cskaoyan.mall.order.constant.OrderRetCode;
import com.cskaoyan.order.dal.entitys.Order;
import com.cskaoyan.order.dal.entitys.OrderItem;
import com.cskaoyan.order.dal.persistence.OrderItemMapper;
import com.cskaoyan.order.dal.persistence.OrderMapper;
import com.cskaoyan.order.dto.CartProductDto;
import com.cskaoyan.order.utils.GlobalIdGeneratorUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * 初始化订单 生成订单
 */

@Slf4j
@Component
public class InitOrderHandler extends AbstractTransHandler {


    @Autowired
    SendEmailCallback sendEmailCallback;

    @Autowired
    OrderMapper orderMapper;

    @Autowired
    OrderItemMapper orderItemMapper;

    @Autowired
    GlobalIdGeneratorUtil globalIdGeneratorUtil;



    private final String ORDER_GLOBAL_ID_CACHE_KEY="ORDER_ID";
    private final String ORDER_ITEM_GLOBAL_ID_CACHE_KEY="ORDER_ITEM_ID";
    @Override
    public TransCallback getTransCallback() {
        return sendEmailCallback;
    }

    @Override
    public boolean isAsync() {
        return false;
    }

    @Override
    public boolean handle(TransHandlerContext context) {
        CreateOrderContext createOrderContext = (CreateOrderContext) context;

        //订单表
        Order order = new Order();
        String orderId =globalIdGeneratorUtil.getNextSeq(ORDER_GLOBAL_ID_CACHE_KEY,1);
        order.setOrderId(orderId);
        order.setUserId(createOrderContext.getUserId());
        order.setBuyerNick(createOrderContext.getBuyerNickName());
        order.setPayment(createOrderContext.getOrderTotal());
        order.setCreateTime(new Date());
        order.setUpdateTime(new Date());
        order.setStatus(OrderConstants.ORDER_STATUS_INIT);
        orderMapper.insert(order);
        //订单关联表
        ArrayList<Long> productIds = new ArrayList<>();
        List<CartProductDto> dtoList = createOrderContext.getCartProductDtoList();
        for (CartProductDto dto : dtoList) {
            OrderItem orderItem = new OrderItem();
            String productId = globalIdGeneratorUtil.getNextSeq(ORDER_ITEM_GLOBAL_ID_CACHE_KEY,1);
            orderItem.setId(productId);
            orderItem.setItemId(dto.getProductId());
            orderItem.setOrderId(orderId);
            orderItem.setNum(dto.getProductNum().intValue());
            orderItem.setPrice(dto.getSalePrice().doubleValue());
            orderItem.setTitle(dto.getProductName());
            orderItem.setPicPath(dto.getProductImg());
            Double total = (dto.getSalePrice().multiply(new BigDecimal(dto.getProductNum()))).doubleValue();
            orderItem.setTotalFee(total);
            orderItem.setStatus(1);
            orderItemMapper.insert(orderItem);
            productIds.add(Long.parseLong(productId));
        }

        createOrderContext.setOrderId(orderId);
        createOrderContext.setBuyProductIds(productIds);
        return true;
    }

}
